Turning insert



FIG. 1 is a top perspective view of a turning insert showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a side elevational view thereof; and,

FIG. 5 is a further side elevational view thereof in a rotated position. 

The ornamental design for a turning insert, as shown and described. 